Siqura C-60 E-MC, User Manual, Page: 49 / 142

Working with the Web Pages
Page 43
10.4.2.3 Advanced Settings
Important:
If in doubt about these settings, do not change the default values.
Encoder
Depending on the selected encoding mode, specific parameter values in this section are dimmed
- that is, not available for configuration.
Advanced Settings, Encoder, MPEG-2 mode
Encoder (MPEG-2 mode)
Frame rate divider Relates to the frame rate configured in the Encoder Settings section.
X-resolution Variables that enable you to freely set picture resolution instead of using the
resolution presets in the Encoder Settings section.
Y-resolution
Stream type Transport Stream or Elementary Stream .
Quantization matrix MPEG Default , Alternative 1 , or Alternative 2 .
Meta data insertion mode For details, see the section on Meta Data Insertion (on page 51).
Disabled No meta data added to stream.
Fixed interval Activates Meta data insertion interval parameter (below).
Each I-frame Data block is added after each I-frame. The interval is
determined by the GOP length, therefore.
Meta data insertion
interval Activate this parameter by setting Meta data insertion mode (above) to Fixed
interval .
Note on Quantization: Quantization is a lossy compression technique used in image processing.
It is based on the fact that variations in high frequency brightness, for example, are not easily
distinguished by the human eye. A quantization matrix, a combination of predefined values, is
used to reduce the amount of information in the high frequency components of an image,
thereby making the stream more compressible. The values in a quantization matrix are often
chosen such that certain frequencies are kept in the source to avoid losing image quality.